US5477941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
On-board lubrication system for direct application to curved and tangent railroad track
Assignee: Loram Maintenance of Way Inc
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Filing: 1994-03-15
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Granted: 1995-12-26
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Expires: 2014-03-15
Abstract
Abstract In railroad applications, an improved method and apparatus for optimizing on-board rail lubrication for both curved and tangent track. The lubricants are applied by an apparatus directly to the rails behind the last axle of the last locomotive of a locomotive consist. The system uses lubricant delivery nozzles which are integrated with the sand pipe and nozzle for each rail. The lubricant nozzles are aimed toward the wheel rail contact at a distance of several inches behind the contact for accurate application of one lubricant on the top of the rail (TOR) and another on the rail gage side (RAGS). The lubricant quantities sprayed on the rail are controlled by a miroprocessor with the use of a flow injection pulse, system or flow control valves. Furthermore, the microprocessor triggers sand application when emergency brakes are applied. A new method of determination of trailing tons in the train is used by averaging the total power used by the locomotives at a certain speed.
Inventors
- 👤 Sudhir Kumar
- 👤 Shiv R. Kumar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:53
CPC Classifications
B; B61; B61K; B61K3/00; B61K3/02; B61C; B61C15/00; B61C15/08; B61C15/10; B61C15/107
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
119 words
In a railroad locomotive of the type having trucks each mounting wheel and axle sets and sanding systems including a pipe leading to a nozzle for applying sand to a rail adjacent the wheels, the improvement comprising an on-board lubricating device for lubricating a railroad track rail, including: a lubricant supply tank mounted on the locomotive; at least one lubricant supply tube in fluid communication with the lubricant supply tank, said tube being integrated with the sand pipe and terminating at a spray nozzle aimed at the rail crown at a point adjacent the point of contact between the locomotive wheel and rail; and means for controlling the flow of lubricant from the supply tank to the spray nozzle.
Claim 2
Dependent Claim
119 words
In a railroad locomotive of the type having trucks each mounting wheel and axle sets and sanding systems including a pipe leading to a nozzle for applying sand to a rail adjacent the wheels, the improvement comprising an on-board lubricating device for lubricating a railroad track rail, including: a lubricant supply tank mounted on the locomotive; at least one lubricant supply tube in fluid communication with the lubricant supply tank, said tube being integrated with the sand pipe and terminating at a spray nozzle aimed at the rail crown at a point adjacent the point of contact between the locomotive wheel and rail; and means for controlling the flow of lubricant from the supply tank to the spray nozzle.
Claim 3
Dependent Claim
67 words
The lubricating device of claim 1 further comprising a second lubricant supply tank mounted on the locomotive and a second lubricant supply tube in fluid communication with the second lubricant supply tank, said second tube being integrated with the sand pipe and terminating at a spray nozzle aimed at the rail gage side at a point adjacent the point of contact between the locomotive wheel and rail.
Claim 4
Dependent Claim
26 words
The lubricating device of claim 1 wherein said means for controlling the flow of lubricant includes a flow control valve connected to the lubricant supply tube.
Claim 5
Dependent Claim
27 words
The lubricating device of claim 1 wherein said means for controlling the flow of lubricant includes a fluid injection pulse control connected to the lubricant supply tube.
Claim 6
Dependent Claim
45 words
The lubricating device of claim 1 wherein said means for controlling the flow of lubricant includes a means for stopping the flow of lubricant from the lubricant storage tank and triggering a signal for activating the sanding system upon application of the locomotive's emergency brakes.
Claim 7
Dependent Claim
110 words
An on-board lubricating device for lubricating a railroad track rail, the device to be mounted on the last locomotive of a locomotive consist behind the last tractive wheel, comprising a lubricant supply tank, a support bracket attached to the axle box of the locomotive's last tractive wheel, at least one lubricant supply tube in fluid communication with the lubricant supply tank and mounted on the support bracket, said tube terminating at a spray nozzle aimed at the rail crown a small distance behind the point of contact between the last tractive wheel and rail, and means for controlling the flow of lubricant from the supply tank to the spray nozzle.
Claim 8
Dependent Claim
110 words
An on-board lubricating device for lubricating a railroad track rail, the device to be mounted on the last locomotive of a locomotive consist behind the last tractive wheel, comprising a lubricant supply tank, a support bracket attached to the axle box of the locomotive's last tractive wheel, at least one lubricant supply tube in fluid communication with the lubricant supply tank and mounted on the support bracket, said tube terminating at a spray nozzle aimed at the rail crown a small distance behind the point of contact between the last tractive wheel and rail, and means for controlling the flow of lubricant from the supply tank to the spray nozzle.
Claim 9
Dependent Claim
32 words
The lubricating device of claim 6 wherein the spray nozzle is disposed so as to direct the center of the lubricant spray between two and twenty-four inches behind the last tractive wheel.
Claim 10
Dependent Claim
21 words
The lubricating device of claim 6 wherein the spray nozzle is disposed between two and twelve inches above the rail crown.
Claim 11
Dependent Claim
61 words
The lubricating device of claim 6 further comprising a second lubricant supply tank mounted on the locomotive and a second lubricant supply tube in fluid communication with the second lubricant supply tank, said second tube terminating at a spray nozzle aimed at the rail gage side a small distance behind the point of contact between the last tractive wheel and rail.
Claim 12
Dependent Claim
37 words
The lubricating device of claim 9 wherein the spray nozzle of the second supply tube is disposed so as to direct the center of the lubricant spray between two and twenty-four inches behind the last tractive wheel.
Claim 13
Dependent Claim
26 words
The lubricating device of claim 9 wherein the spray nozzle of the second supply tube is disposed between two and twelve inches above the rail crown.
Claim 14
Dependent Claim
26 words
The lubricating device of claim 6 wherein said means for controlling the flow of lubricant includes a flow control valve connected to the lubricant supply tube.
Claim 15
Dependent Claim
27 words
The lubricating device of claim 6 wherein said means for controlling the flow of lubricant includes a fluid injection pulse control connected to the lubricant supply tube.
Claim 16
Dependent Claim
41 words
The lubricating device of claim 6 wherein said means for controlling the flow of lubricant includes a means for stopping the flow of lubricant and triggering a signal for activating a locomotive sanding system upon application of the locomotive's emergency brakes.
References Cited (Backward Citations)
US1386426A
Cited
US1709095A
Cited
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Cited
GB724189A
Cited
US4930600A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-12-25 | 1999-06-26 | 1999-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-25 | 2003-06-26 | 2003-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-25 | 2007-06-26 | 2007-12-26 | $7700.00 | Window Closed / Lapsed |